A dual random model of a portfolio of variable amount whole life annuity is set with the mth moment of the present value of benefits, and the respective expressions of the moments under the assumption that the force o...A dual random model of a portfolio of variable amount whole life annuity is set with the mth moment of the present value of benefits, and the respective expressions of the moments under the assumption that the force of interest accumulation function is Wiener process or Ornstein-Uhlenbeck process. Furthermore, the limiting distribution of average cost of this portfolio is discussed with the expression of the limiting distribution under the assumption that the force of interest accumulation is an independent increment process.展开更多
In recent years,Globalization enhances the development of education and corporation between higher education organizations.Being part of international organization involved in education policy-making,UNESCO has play a...In recent years,Globalization enhances the development of education and corporation between higher education organizations.Being part of international organization involved in education policy-making,UNESCO has play an indispensable role in the enhancement of higher education.Present essay introduces the structures and working patterns of UNESCO and its role in accelerating the formulation of higher education policy.Meanwhile,limitations and challenged UNESCO confronted are also provided to give a detailed analysis of the role UNESCO plays in higher education.展开更多
Over the 1948-2018 period,UN peacekeeping operations have amounted to 70 years of service and sacrifice.With prominent contributions to the world peace and security,the UN has been facing more and more challenges in d...Over the 1948-2018 period,UN peacekeeping operations have amounted to 70 years of service and sacrifice.With prominent contributions to the world peace and security,the UN has been facing more and more challenges in different areas.Currently,UN peacekeeping is becoming more challenging because it is entrenched in an era of more limited resources.This study investigates one of the greatest challenges that UN peacekeeping is now facing,as a result of which UN peacekeeping could fail.This study also tries to find the cause of this phenomenon,which has a strong connection to the change in US policy.The findings suggest that comprehensive measures should be taken in the UN future reforms.展开更多
文摘A dual random model of a portfolio of variable amount whole life annuity is set with the mth moment of the present value of benefits, and the respective expressions of the moments under the assumption that the force of interest accumulation function is Wiener process or Ornstein-Uhlenbeck process. Furthermore, the limiting distribution of average cost of this portfolio is discussed with the expression of the limiting distribution under the assumption that the force of interest accumulation is an independent increment process.
文摘In recent years,Globalization enhances the development of education and corporation between higher education organizations.Being part of international organization involved in education policy-making,UNESCO has play an indispensable role in the enhancement of higher education.Present essay introduces the structures and working patterns of UNESCO and its role in accelerating the formulation of higher education policy.Meanwhile,limitations and challenged UNESCO confronted are also provided to give a detailed analysis of the role UNESCO plays in higher education.
文摘Over the 1948-2018 period,UN peacekeeping operations have amounted to 70 years of service and sacrifice.With prominent contributions to the world peace and security,the UN has been facing more and more challenges in different areas.Currently,UN peacekeeping is becoming more challenging because it is entrenched in an era of more limited resources.This study investigates one of the greatest challenges that UN peacekeeping is now facing,as a result of which UN peacekeeping could fail.This study also tries to find the cause of this phenomenon,which has a strong connection to the change in US policy.The findings suggest that comprehensive measures should be taken in the UN future reforms.
